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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gccint/Languages.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
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| -rw-r--r-- | share/doc/gccint/Languages.html | 114 |
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diff --git a/share/doc/gccint/Languages.html b/share/doc/gccint/Languages.html new file mode 100644 index 0000000..21fb0ac --- /dev/null +++ b/share/doc/gccint/Languages.html @@ -0,0 +1,114 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). A copy of the license is included in the section entitled +"GNU Free Documentation License". + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>GNU Compiler Collection (GCC) Internals: Languages</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: Languages"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Languages"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="index.html#Top" rel="up" title="Top"> +<link href="Source-Tree.html#Source-Tree" rel="next" title="Source Tree"> +<link href="Miscellaneous-routines.html#Miscellaneous-routines" rel="previous" title="Miscellaneous routines"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Languages"></a> +<div class="header"> +<p> +Next: <a href="Source-Tree.html#Source-Tree" accesskey="n" rel="next">Source Tree</a>, Previous: <a href="Libgcc.html#Libgcc" accesskey="p" rel="previous">Libgcc</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Language-Front-Ends-in-GCC"></a> +<h2 class="chapter">5 Language Front Ends in GCC</h2> + +<p>The interface to front ends for languages in GCC, and in particular +the <code>tree</code> structure (see <a href="GENERIC.html#GENERIC">GENERIC</a>), was initially designed for +C, and many aspects of it are still somewhat biased towards C and +C-like languages. It is, however, reasonably well suited to other +procedural languages, and front ends for many such languages have been +written for GCC. +</p> +<p>Writing a compiler as a front end for GCC, rather than compiling +directly to assembler or generating C code which is then compiled by +GCC, has several advantages: +</p> +<ul> +<li> GCC front ends benefit from the support for many different +target machines already present in GCC. +</li><li> GCC front ends benefit from all the optimizations in GCC. Some +of these, such as alias analysis, may work better when GCC is +compiling directly from source code than when it is compiling from +generated C code. +</li><li> Better debugging information is generated when compiling +directly from source code than when going via intermediate generated C +code. +</li></ul> + +<p>Because of the advantages of writing a compiler as a GCC front end, +GCC front ends have also been created for languages very different +from those for which GCC was designed, such as the declarative +logic/functional language Mercury. For these reasons, it may also be +useful to implement compilers created for specialized purposes (for +example, as part of a research project) as GCC front ends. +</p> + + + +</body> +</html> |